The SB5 Smart Booster adds expanded and updated features to a Power Cab DCC system. The first and most noticeable feature is additional power (5 Amps) to run trains and accessories.

Power Cab(s) used with the SB5 can now be unplugged and used in true walk around fashion. It no longer needs to remain connected for the system to work.

Up to 6 cabs can be used with the SB3a (Cab address range 2 through 7) Cabs have up to six recalls each when used with the SB5.

Additional 5 Amp boosters (DB5) may be added to the SB5 for even more power handling on larger layouts. 

The SB5 does not have a programming track output. The basic Power Cab provides this capability.

Power Supply:

The SB5 now includes a P514 Internationally approved Power Supply. The P514 incorporates a internal short circuit protection. See manual for more info. 

Track voltage is selectable 12V or 13.8V on the P514.

No need to but the P515 Power Supply anymore!